Plaster ring with center bosses



FIG. 1 is a perspective view of a plaster ring with center bosses in accordance with the present design;

FIG. 2 is a front view of the plaster ring with center bosses shown in FIG. 1;

FIG. 3 is a rear view of the plaster ring with center bosses shown in FIG. 1;

FIG. 4 is a top plan view of the plaster ring with center bosses shown in FIG. 1;

FIG. 5 is a bottom plan view of the plaster ring with center bosses shown in FIG. 1;

FIG. 6 is a left side view of the plaster ring with center bosses shown in FIG. 1; and,

FIG. 7 is a right side view of the plaster ring with center bosses shown in FIG. 1. 

CLAIM The ornamental design for a plaster ring with center bosses, as shown. 